A flue pipe’s sound arises from air passing a slit and striking a wedge

Related

• Open pipe ends reflect low frequencies but pass high frequencies (similarity 0.85)
• Finger-hole diameters determine where a pipe’s effective opening lies (similarity 0.81)
• Walls must be rough on many scales to scatter sound diffusely (similarity 0.81)
• Short wavelengths escape open pipe ends while long wavelengths reflect back (similarity 0.80)
• Piano hammers and drumsticks produce repeated impacts creating non-linearity (similarity 0.79)
• Organ pipes exemplify both reed and flue wind-instrument sound sources (similarity 0.79)
• Air reed frequency rises with airflow velocity and falls with cut-up length (similarity 0.78)
• An obstacle’s edge acts as a new point source emitting circular waves (similarity 0.78)
• Flute playing frequencies are impedance minima; trumpet’s are maxima (similarity 0.78)
• A pianoforte with raised dampers can physically re-echo sung vowels via sympathetic resonance (similarity 0.78)
• Pressure nodes in a sound field host maximal air flow which weakens sound intensity (similarity 0.78)